Elastic cord exercise machine with slack take-up mechanism

ABSTRACT

A belly exercise healthy machine includes a kneeling box having five wheels inside the box wherein a front wheel engaged on a first axial rod, two left wheels superimposedly engaged on a second axial rod and two right wheels engaged on a third axial rod a roller assembly having a shaft, a positioning plate on the middle of the shaft, a pair of rollers abutting the lateral sides of the positioning plate, a pair of handle grips on two ends of the shaft and a pair corks engaged into two ends of the handle grips, an elastic rope has a first end connected to the positioning plate via a tube and a first ball headed adapter and a second end connected to a transverse linear slot via a second ball head adapter and a cup shaped retainer. The rope winds on the front wheel and then sequentially and alternately winds on the left wheels and the right wheels. An operator can knee on the kneeling box and pushes the roller assembly to and fro to exercise his belly.

BACKGROUND OF THE INVENTION

[0001] The present invention relates to healthy machine and more particularly to a belly exercise healthy machine.

[0002] Typical healthy machine for exercising the belly of human comprises generally a kneeling box, a roller assembly and a pair of elastic ropes connected between the kneeling box and the roller assembly. A human body kneels on the kneeling box and pushes the roller assembly forward. The body first displays to an inverse V-shaped posture, then gradually becomes a lying position as to stretch his belly and then pull back the roller assembly to regain his original kneeling posture. Repeated operation as discussed the above, it will achieve the belly exercise purpose. However, this type of the belly exercise healthy machine has a disadvantage that the elastic ropes may be disordered because they are all exploded out of the kneeling box.

SUMMARY OF THE PRESENT INVENTION

[0003] The present invention has a main object to provide a belly exercise healthy machine in which the elastic rope is hidden in the kneeling box and alternately wound on a plurality of wheels so that the rope is stretched or contracted freely without disordering.

[0004] Accordingly, the belly exercise healthy machine of the present invention comprises generally a kneeling box, a roller assembly and an elastic rope. The elastic rope has one end secured inside the kneeling box and alternately winds on five wheels and then the other end connects to the roller assembly. So that the elasticity of the elastic rope is stable and free to stretch and to contract without disordered.

[0005] The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006]FIG. 1 is an exploded perspective view to show preferred embodiment of the present invention,

[0007]FIG. 2 is an exploded perspective view to show the wheels inside the kneeling box,

[0008]FIG. 3 is a perspectively view to show the assembly of FIG. 1,

[0009]FIG. 4 is a sectional view of the roller assembly,

[0010]FIG. 5 is a plane view to show the elastic rope winding on the wheels inside the kneeling box,

[0011]FIG. 6 is a sectional view of the wheels inside the kneeling box,

[0012]FIG. 7 is a side view to show an operator to operate the belly exercise healthy machine while the body is about to present an inverse V-shaped posture,

[0013]FIG. 8 is a side view while the operator is becoming a lying position,

[0014]FIG. 9 is an exploded perspective view to show an alternate embodiment of the present invention,

[0015]FIG. 10 is a side view to show an operator sitting down on the kneeling box to lift the handle grips up and down as to play a dumbbell.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0016] With reference to FIGS. 1, 2 and 3 of the drawings, the belly exercise healthy machine of the present invention comprises generally a kneeling box 10, an elastic rope 20 and a roller assembly 30. The kneeling box 10 has a cover 11, a base 12 combined with the cover 11 by a plurality of screws 111, three axial rods 121, 122 and 123 and a stabilized rod 129 spacedly disposed on the inner surface of the base 12, a front wheel 124 rotatably sleeved on the axial rod 121, a pair of the left wheels 125 and 126 superimposedly engaged on the axial rod 122, a pair of right wheels 127 and 128 superimposedly engaged on the axial rod 123, a back plate 120 projected upward from the back edge of the base 12 in which is a transverse linear slot 1201 and a plurality of L-shaped positioning slots 1202 communicating to the linear slot 1201 and a cushion 112 disposed on the top of the cover 11.

[0017] The roller assembly 30 has a shaft 31, a positioning plate secured to the middle portion of the shaft 31, a pair of rollers 33 rotatably secured to the shaft 31 abutting the lateral sides of the positioning plate 32, a pair of handle grips 34 wrapped on two ends of the shaft 31 and a pair of corks 35 secured to the free ends of the handle grips 34 (as shown in FIG. 4).

[0018] Referring to FIGS. 5 and 6 and FIGS. 1 and 2 again, the elastic rope has a first end secured to a ball headed adapter 23 which includes a circular plate 231, and a tube 24 has a hollow cylinder body 242, an opening 243 in the top and a collar 241 on one end for retaining the ball headed adapter 23. The tube 24 is secured to the positioning plate 32 by screw 25 and nut 321 with a washer engaged therebeween. The elastic rope 20 first winds on the front wheel 124, then a lower left wheel 126, a lower right wheel 128, an upper left wheel 125 and an upper right wheel 127 and then the second end of the rope secured to a ball headed adapter 21 which is retained in a cup shaped retainer 22. The retainer 22 has a retaining plate 221 secured to one end of the linear slot 1201 by a screw 222 and nut 223 with a washer engaged therebetween. The retaining plate 221 is displaceable to any of the L-shaped slots 1202 when the elastic rope 20 is found slack.

[0019] Referring to FIGS. 7 and 8, in operation, the operator knees on the top of the kneeling box 10 and grips the handle grips 34 to push the roller assembly 30 forward by using the force of the arms and the legs. The body of the operator is first bowed as an inverse V-shaped posture, then stretches out to became a lying position. When retreats, the elastic rope 20 will contract back into the kneeling box 10 and the body of the operator regains to his original kneeling posture. Repeated operation as discussed the above, the belly of the operator will be exercised.

[0020] Because of that the two right wheels 127 and 128 is rotated reversely to the left-wheels 125 and 126, the elastic rope 20 receives both the friction force and the resistance force so that rope 20 will be stretched or contracted stably and slowly.

[0021] Referring to FIGS. 9 and 10, an alternate embodiment of the belly exercise healthy machine is provided. This embodiment is structurally and functionally most similar to the above embodiment as described in FIGS. 1-8, and the above discussion is applicable in the most instances. The only difference is that the two rollers 33 of the roller assembly are removed. Instead of is a positioning clip 36 to clip the shaft 31 to control the positioning plate 32 from lateral displacement. By this modification, the operator may sit down on the top of the kneeling box 10 and lift the shaft 31 up and down with two hands just as to play a dumbbell.

[0022] The specification relating to the above embodiment should be construed as exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents. 

I claim:
 1. A belly exercise healthy machine comprising: a kneeling box having a base, a first, second and third axial rods projected upward from inner surface of the base, a stabilizing rod abutting the first axial rod, a back wall projected upward from back edge of the base including a transverse linear slot in the wall, a plurality of L-shaped slots spacedly formed in the wall communicating to the transverse linear slot, a front wheel rotatably engaged on the first axial rod, an upper left wheel and a lower left wheel superimposedly engaged on the second axial rod, an upper right wheel and a lower right wheel superimposedly engaged on the third axial rod, a cover covering the base and secured by a plurality of screws and a cushion disposed on top of the cover; a roller assembly having a shaft, a positioning plate disposed to a middle portion of the shaft, a pair of rollers rotatably engaged on the shaft beside the positioning plate, a pair of handle grips secured to two ends of the shaft and a pair of cords engaged into two ends of the handle grips respectively; a tube having one end secured to the positioning plate by screw and nut with a washer engaged therebetween, an upper opening in an upper periphery and a collar on the other end thereof; a cup shaped retainer having a retaining plate secured to one end of the transverse linear slot in the wall of the kneeling box by screw and nut with a washer engaged therebetween; an elastic rope having a first end secured to a first ball headed adapter which has a circular retaining plate engaged into the opening of the tube and retained by the collar, said rope first winding on the front wheel and then sequentially winding on the lower left wheel, the lower right wheel, the upper left wheel and the upper right wheel, a second end thereof secured to a second ball headed adapter which is retained in the cup shaped retainer.
 2. A belly exercise healthy machine comprising: a kneeling box having a base, a first, second and third axial rods projected upward from inner surface of the base, a stabilizing rod abutting the first axial rod, a back wall projected upward from back edge of the base including a transverse linear slot in the wall, a plurality of L-shaped slots spacedly formed in the wall communicating to the transverse linear slot, a front wheel rotatably engaged on the first axial rod, an upper left wheel and a lower left wheel superimposedly engaged on the second axial rod, an upper right wheel and a lower right wheel superimposedly engaged on the third axial rod, a cover covering the base and secured by a plurality of screws and a cushion disposed on top of the cover; a shaft having a positioning plate disposed to a middle portion thereof, a pair of handle grips secured to two ends of the shaft a pair of corks engaged into two ends of the handle grips respectively and a gripping means gripping to the middle portion of the shaft for controlling the positioning plate from lateral displacement; a tube having one end secured to the positioning plate by screw and nut with a washer engaged therebetween, an upper opening in an upper periphery and a collar on the other end thereof; a cup shaped retainer having a retaining plate secured to one end of the transverse linear slot in the wall of the kneeling box by screw and nut with a washer engaged therebetween; an elastic rope having a first end secured to a first ball headed adapter which has a circular retaining plate engaged into the opening of the tube and retained by the collar, said rope first winding on the front wheel and then sequentially winding on the lower left wheel, the lower right wheel, the upper left wheel and the upper right wheel, a second end thereof secured to a second ball headed adapter which is retained in the cup shaped retainer. 